Sylhet Sadar upazila on the north, Balaganj on the south, Sylhet Sadar and Balaganj upazilas on the east, Jagannathpur and Chhatak upazilas on the west.

Bishwnath thana was established in 1922 and was turned into an upazila in 1980. It consists of 8 union parishads, 118 mouzas and 432 villages.

Bishwanath Upazila is located in Sylhet District. Upazilla(s)/Thana(s) in Sylhet are Balaganj Upazila, Beanibazar Upazila, Bishwanath Upazila, Companiganj Upazila, Fenchuganj Upazila, Golabganj Upazila, Gowainghat Upazila, Jaintiapur Upazila, Kanaighat Upazila, Sylhet Sadar Upazila, Zakiganj Upazila.